headspace?

Discussion in 'AR-15 Discussion' started by bclark1, Feb 21, 2013.

  1. bclark1

    bclark1 New Member

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    I recently purchased an ar barrel but when i got it in i found it did not come with a bolt. I ordered a bolt but i was wandering if since they were not made together and are not the same brand if the headspacing would be an issue. *
     
  2. JonM

    JonM Moderator

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    shouldnt be an issue so long as its milspec. ar15 spacing is mostly only an issue when installing the barrel extension.
     

  3. bclark1

    bclark1 New Member

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    Ok thanks i was hoping i wouldnt have to fork out more money to buy something to check it.
     
  4. MisterMcCool

    MisterMcCool Well-Known Member Supporter

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    Should not be a problem. Many people build ARs out of parts.
     
  5. sniper762

    sniper762 New Member

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    most ar parts are milspec, thus will interchange without a problem. to be on the safe side, though, you can get a "go-no go" headspace gauge to check it.
     
  6. bclark1

    bclark1 New Member

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    Yes this ar was a parts gun i just didnt know if the barrel and bolt which i think are most of the time sold in pairs were interchangeable. But thanks for the help!
     
  7. epleyjoseph

    epleyjoseph New Member

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    Is there a way to check head space without paying for gages?
     
  8. Jpyle

    Jpyle New Member

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    Yes, pay a gunsmith to do it :)
     
  9. fsted2a

    fsted2a Active Member

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    Shouldn't be an issue until you go through tens of thousands of rounds. Then it might be a good idea to invest in guages.
     
  10. JonM

    JonM Moderator

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    If your just checking for unsafe chamber dimensions what you need is a field gage. If the bolt closes on a field gage the gun is not safe to shoot. A field gage is the exact maximum safe saami dimension for a given caliber.

    To do any gage tests on a ar15 the ejector needs to be removed.

    Go gage is the shortest safe saami spec that allows ammunition made to saami maximum spec. field is the longest safe chamber dimension. Go and Nogo gages are typically used when cutting a chamber to spec or setting head space on adjustable rifles like the savage series.
     
    Last edited: Feb 25, 2013